Biosensor



FIG. 1 is a top plan view of a biosensor illustrating our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front plan view thereof with the rear plan view being substantially similar;

FIG. 4 is a right side elevational view thereof with the left side plan view being substantially similar;

FIG. 5 is a perspective view thereof;

FIG. 6 is a top plan view of a second embodiment of a biosensor showing our new design;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a front plan view thereof with the rear plan view, right side elevational view, and left side elevational view being substantially similar; and,

FIG. 9 is a perspective view thereof. 

The ornamental design for a biosensor, as shown and described. 